Q. Read the following passage carefully and answer the questions that follow :
Three-fourth of the Earth is covered by the sea which both separates and
unites the various races of mankind. The sea is the great highway along
which man may travel at his will, the great road that has no walls or
hedges hemming it in. Nobody needs to keep it in good repair with the
helps of pickaxes and barrels of tar and steamrollers. The sea appeals
to man’s love of the perilous and the unknown, to his love of conquest,
his love of knowledge and his love of gold. Its blue waters call to him
and bid him fare forth in quest of fresh fields. Beyond their horizon he
has found danger and death, glory and gain.
(i) How much of our planet is not covered by the sea?
(ii) How does the sea help man?
(iii) In what way does the sea appeal to man?
Ans: (i) About 70 percent of the Earth's surface is ocean covered, and more than 80 percent of it remains unexplored. The ocean is a huge body of saltwater that covers about 71 percent of Earth's surface.